EP0361394B1 - Schutzvorrichtung für einen von einem hermetischen Motor angetriebenen Verdichter - Google Patents

Schutzvorrichtung für einen von einem hermetischen Motor angetriebenen Verdichter Download PDF

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Publication number
EP0361394B1
EP0361394B1 EP19890117754 EP89117754A EP0361394B1 EP 0361394 B1 EP0361394 B1 EP 0361394B1 EP 19890117754 EP19890117754 EP 19890117754 EP 89117754 A EP89117754 A EP 89117754A EP 0361394 B1 EP0361394 B1 EP 0361394B1
Authority
EP
European Patent Office
Prior art keywords
protective device
insulating layer
driven compressor
motor
hermetic motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19890117754
Other languages
English (en)
French (fr)
Other versions
EP0361394A3 (de
EP0361394A2 (de
Inventor
Hidehiko Yamada
Shigeru Muramatsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP0361394A2 publication Critical patent/EP0361394A2/de
Publication of EP0361394A3 publication Critical patent/EP0361394A3/de
Application granted granted Critical
Publication of EP0361394B1 publication Critical patent/EP0361394B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
    • Y10T428/1307—Bag or tubular film [e.g., pouch, flexible food casing, envelope, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31725—Of polyamide

Definitions

  • the present invention relates to an improvement in a current/temperature sensitive type overload protective device to be mounted on a motor for a hermetic motor-driven compressor and an improvement in a method of attaching the same.
  • a current/temperature sensitive type overload protective device (hereinafter, referred to a protective device) which is provided in the casing of a hermetic motor-driven compressor so as to electrically disconnect the motor for the compressor from a power source by sensing predetermined temperature values of the motor and a refrigerant gas as well as a predetermined value of overcurrent in a case that the hermetic motor-driven compressor is operated under a condition of overload.
  • Figures 5 to 10 show examples of attaching a conventional protective device to a typical hermetic motor-driven compressor as disclosed in, for instance, Japanese Unexamined Utility Model Publication 175581/1981.
  • a protective device 5 is placed in contact with the surface of a motor end coil 3 and is fixed thereto by means of a binding string 4.
  • Figures 5, 6 and 8 show the examples that the protective device 5 is attached to the upper end portion of the motor end coil 3
  • Figures 9 and 10 show the examples that the protective device 5 is attached to a side area of the motor end coil 3.
  • FIG 7 is an enlarged perspective view showing a conventional protective device 5 wherein the main body of the protective device 5 which is an electrically charged portion is covered by an insulating layer 6 of a hard film material such as polyester film.
  • the insulating layer 6 of the polyester film is wrapped around the protective device 5 in a cylindrical form with both ends being opened wherein overlapping portions are bonded.
  • the length l 1 in the axial direction of the cylindrically formed insulating layer 6 is generally 1.5 - 2 times as long as the length l 0 of the protective device 5 in order to keep a sufficient distance of the space for electric insulation.
  • hermetic motor-driven compressors are generally of a small size, it was difficult to attach a protective device 5 to a motor end coil 3 in assembling operations.
  • a protective device for a hermetic motor-driven compressor which comprises a protective device main body and an insulating layer made of a heat-resisting insulating material having a heat-resisting temperature of 155°C or higher and the insulating layer is formed from a cylindrically shaped insulating sheet into a bag to receive therein said main body and that opposing end portions of said insulating layer are melt-bonded by ultra-sonic welding.
  • a protective device 5 which is the subject to be protected is in contact with the surface of a motor end coil 3 and is fixed thereto by means of a binding string 4.
  • FIG 3 shows the protective device 5 according to the present invention.
  • the main body constituting an electrically charged portion of the protective device 5 is covered by an insulating layer 6.
  • a sheet of aromatic polyamide (an aramid sheet) is used as the insulating layer 6.
  • the insulating layer is formed into a cylindrical shape. Both end portions of the cylindrically shaped insulating layer 6 are respectively closed to be in a form of bag so that the protective device 5 is entirely surrounded in it.
  • the closed end portions 8a, 8b are melt-welded by applying ultrasonic waves.
  • the protective device 5 having its dimension l0 in the longitudinal direction is attached to the motor end coil 3.
  • the insulating layer 6 can be easily deformed by winding the binding string 4 around the motor end coil 3 so that the dimension l2 of the insulating layer 6 can be substantially the same as the dimension l0 of the protective device 5.
  • the aramide sheet is used as a material for the insulating layer 6.
  • another material may be used so long as the materials has a heat resistance property of 155°C or higher.
  • a sheet of polyimide resin may be used.
  • the protective device main body is surrounded by the insulating layer made of a heat resisting material having a heat resisting temperature of 155°C or higher. Accordingly, the insulating layer can withstand heat of radiation when a hermetic casing is prepared by welding.
  • the aramid sheet is used for the insulating layer and both ends of the insulating layer are respectively melt-bonded by ultrasonic waves to have a shape of bag. Accordingly, it is unnecessary to use an adhesive and therefore the protective device of the present invention is not chemically attacked even when it is used in an atmosphere of refrigerant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Claims (2)

  1. Schutzvorrichtung für einen von einem hermetischen Motor angetriebenen Verdichter mit einem Schutzvorrichtungs-Hauptkörper (5) und einer Isolierschicht (6) aus einem hitzebeständigen Isolierwerkstoff, dadurch gekennzeichnet, daß der Isolierwerkstoff hitzebeständig bis zu einer Temperatur von 155°C oder mehr ist, daß die Isolierschicht (6) aus einer zylindrisch geformten Isolierfolie zu einem Beutel zur Aufnahme des Hauptkörpers (5) geformt ist und daß die gegenüberliegenden Endabschnitte (8a, 8b) der Isolierschicht (6) durch Ultraschallschweißen schmelzverbunden sind.
  2. Schutzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Isolierschicht (6) eine aromatische Polyamidfolie ist.
EP19890117754 1988-09-26 1989-09-26 Schutzvorrichtung für einen von einem hermetischen Motor angetriebenen Verdichter Expired - Lifetime EP0361394B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24007888A JPH0749796B2 (ja) 1988-09-26 1988-09-26 密閉形電動圧縮機の保護器
JP240078/88 1988-09-26

Publications (3)

Publication Number Publication Date
EP0361394A2 EP0361394A2 (de) 1990-04-04
EP0361394A3 EP0361394A3 (de) 1992-03-11
EP0361394B1 true EP0361394B1 (de) 1993-12-01

Family

ID=17054167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890117754 Expired - Lifetime EP0361394B1 (de) 1988-09-26 1989-09-26 Schutzvorrichtung für einen von einem hermetischen Motor angetriebenen Verdichter

Country Status (6)

Country Link
US (1) US5126196A (de)
EP (1) EP0361394B1 (de)
JP (1) JPH0749796B2 (de)
KR (1) KR930009731B1 (de)
CN (1) CN1013793B (de)
AU (1) AU614423B2 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2190697C (en) * 1996-01-31 2000-07-25 Donald Glenn Larson Blower motor with adjustable timing
US6315528B1 (en) * 1999-05-27 2001-11-13 Scroll Technologies Terminal connection in small area of scroll compressor and method for carrying out same
CN101713397B (zh) * 2003-12-30 2014-07-09 艾默生环境优化技术有限公司 压缩机保护和诊断系统
US7412842B2 (en) 2004-04-27 2008-08-19 Emerson Climate Technologies, Inc. Compressor diagnostic and protection system
US7275377B2 (en) 2004-08-11 2007-10-02 Lawrence Kates Method and apparatus for monitoring refrigerant-cycle systems
US7535136B2 (en) * 2006-02-22 2009-05-19 Emerson Electric Co. Protector mounting apparatus for protector mounted on the windings of a motor
US8590325B2 (en) 2006-07-19 2013-11-26 Emerson Climate Technologies, Inc. Protection and diagnostic module for a refrigeration system
US20080216494A1 (en) 2006-09-07 2008-09-11 Pham Hung M Compressor data module
US20090037142A1 (en) 2007-07-30 2009-02-05 Lawrence Kates Portable method and apparatus for monitoring refrigerant-cycle systems
US8393169B2 (en) 2007-09-19 2013-03-12 Emerson Climate Technologies, Inc. Refrigeration monitoring system and method
KR100968615B1 (ko) * 2007-11-13 2010-07-08 동아전기부품 주식회사 모터 제어용 레지스터의 제조 방법
FR2935562A1 (fr) * 2008-09-03 2010-03-05 Michelin Soc Tech Agencement de connexions dans une machine electrique tournante.
JP5693138B2 (ja) * 2010-10-19 2015-04-01 三菱重工業株式会社 密閉型電動圧縮機
EP2681497A4 (de) 2011-02-28 2017-05-31 Emerson Electric Co. Hvac-überwachung und diagnose für haushaltsanwendungen
US9480177B2 (en) 2012-07-27 2016-10-25 Emerson Climate Technologies, Inc. Compressor protection module
US9310439B2 (en) 2012-09-25 2016-04-12 Emerson Climate Technologies, Inc. Compressor having a control and diagnostic module
US9551504B2 (en) 2013-03-15 2017-01-24 Emerson Electric Co. HVAC system remote monitoring and diagnosis
US9803902B2 (en) 2013-03-15 2017-10-31 Emerson Climate Technologies, Inc. System for refrigerant charge verification using two condenser coil temperatures
WO2014144446A1 (en) 2013-03-15 2014-09-18 Emerson Electric Co. Hvac system remote monitoring and diagnosis
CA2908362C (en) 2013-04-05 2018-01-16 Fadi M. Alsaleem Heat-pump system with refrigerant charge diagnostics

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL291107A (de) * 1962-04-09 1900-01-01
GB1135462A (en) * 1966-05-13 1968-12-04 Ici Ltd Aromatic polyamides
US4263475A (en) * 1974-12-23 1981-04-21 General Electric Company Dynamoelectric machine insulators
US4188553A (en) * 1978-02-08 1980-02-12 A. O. Smith Corporation Pocket receptacle for securing a sensing element within electrical windings
US4499517A (en) * 1983-11-14 1985-02-12 Texas Instruments Incorporated Motor protector particularly suited for use with compressor motors
US4646195A (en) * 1983-11-14 1987-02-24 Texas Instruments Incorporated Motor protector particularly suited for use with compressor motors
US4571518A (en) * 1984-12-12 1986-02-18 Sundstrand Corporation Temperature sensor pocket for dynamoelectric machine winding
IT1181608B (it) * 1985-03-15 1987-09-30 Texas Instruments Italia Spa Salvamotore sensibile alla corrente ed alla temperatura e motore che lo incorpora,in particolare per compressori di frigoriferi e simili
US4734602A (en) * 1987-02-24 1988-03-29 American Standard Inc. Motor protector receptacle for a refrigeration compressor

Also Published As

Publication number Publication date
KR930009731B1 (ko) 1993-10-09
CN1013793B (zh) 1991-09-04
JPH0749796B2 (ja) 1995-05-31
JPH0286973A (ja) 1990-03-27
EP0361394A3 (de) 1992-03-11
EP0361394A2 (de) 1990-04-04
AU614423B2 (en) 1991-08-29
KR900005070A (ko) 1990-04-13
AU4151189A (en) 1990-03-29
US5126196A (en) 1992-06-30
CN1041427A (zh) 1990-04-18

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